Coffee-mill



O. MORGAN. OOFFEE MILL.

(No Model.)

No. 461,784. Patented Oct. 20, 1891.

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71 6710 New 24 WWW UNITED STATES IATENT FFICE.

CHARLES MORGAN, OF FREEPORT, ASSIGNOR TO THE ARCADE MANUFAC- TURINGCOMPANY, OF MADISON, ILLINOIS.

COFFEE-MILL.

SPECIFICATION forming part of Letters Patent No. 461,784, dated October20, 1891. Application filed March 2 6, 1891. Serial No. 386,523. (Nomodel.)

To all whom it may concern:

Be it known that I, CHARLES MORGAN,a resident of Freeport, in the countyof Stephenson and State of Illinois, have invented certain new anduseful Improvements in Coffee-Mills; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

This invention relates particularly to means for causing all the coffeecoming from the grinding mechanism to enter the receptacle provided toreceive it, even though it be in a dust-like condition, and also tocertain burradjusting devices and their connection with a portion of thehopper-cover.

In the drawings, Figure 1 is a partial cen tral vertical section of themill and box. Fig. 2 is a plan view of the box with the top removed.Figs. 3, 4, 5, 6, and 7 are detail views.

In the figures, A is a box whose outer walls are without novelty. In andupon the top of this box are fixed a grinding-shell B and a hopper 0,the latter being crossed bya bridge D, which has at its middle anintegrally-formed elongated bearing E for the spindle F of thegrinding-cone. Upon this hearing rests a block G, having anon-cylindrical axial opening to fit the corresponding part of thespindle. Near the top of this block an d a little above the plane of theupper edge of the hopper is an integrally-formed upwardly-convex disk H,having upon its upper surface a rib I. Upon the block G rests a nut J,that Works upon the threaded upper part of the spindle and has at itsupper limit a flange J and upon one side a feather or rib J. Anoutwardly-corrugated sleeve K loosely incloses the nut and has upon itslower side a series of teeth K to engage the rib 1 upon the disk H.These teeth project within the inner wall of the sleeve, as lugs K, andengage the rib J", so that if the sleeve be rotated the nut must movewith it. The sleeve maybe raised until the lugs strike the flange J.Thisdisengages the rib I, but leaves the rib J still between the lugs.Now, since the block and its disk cannot turn upon the spindle, itfollows that the nut cannot rotate upon the spindle while the teethengage the rib I, and hence that the vertical adjustment of the spindleis impossible; but it the sleeve be raised and rotated the nut turnsupon the spindle and either raises or lowers it, thus adjusting themillto grind to any desired degree of fineness. Then the sleeve is againpermitted to drop, its teeth again engage the rib I and the accidentalvariation of adjustment is prevented. The crank is provided with athreaded recess to receive the upper end of the spindle, and the depthof the recess is such that when the crank is screwed down to its'lowestpoint the sleeve cannot be disengaged from the rib I, and hence novertical adjustment of the burrs, accidental or otherwise, is possibleuntil the crank be wholly or partially unscrewed. The cover Q of themill, or the part of the cover ordinarily removed, is the continuationof the disk which forms a part of the cover, and is raised and slippedover the crank B when material is to be placed in the hopper, thecentral'perforation usually occupied by the disk being large enough, sothat it passes readily over the enlargecl end of the crank, which ismerely screwed upon the upper end of the spindle. With this constructionall the parts except the crank are in operative position when the millis packed for shipment.

The drawer M, sliding in the box below the mill proper, is notnecessarily provided With the usual side and rear walls, but is providedwith a distinct coffee-receptacle. (Shown in this instance as a metalliccup N.) The cup is provided with arms 0, pivoted upon opposite sidesnear its top and pivotally secured at the other end to the bottom or tofixtures thereon. These arms then extend upward and rearward from thebottom, and when the drawer is pushed inward till a cup strikes aprojection P upon the rear Wall of the box, continued motion swings thecup upward by virtual rotation about the lower ends of the arms until itmeets the top of the box, inclos-.

ing the grinding mechanism within its rim. The parts are so related thatwhen the cup is at its highest point the face of the drawer is flushwith the walls of the box and the arms are still inclined. As soon asthe drawer begins to move outward, gravity causes the cup to fallgradually until it again rests upon the bottom of the drawer. The cup ispreferably non-detachable from the drawer. Evidently thevertically-adjustable cup serves the same purpose, whether it meets thetop of the box, a sunk hopper, or the outer wall of the grinding-shell,and so, too, other constructions, whereby pressing the drawer inwardalso raises it so that the cofiee is received from the burrs in atightly-closed receptacle, are also within my invention.

\Vhat I claim is- 1. The combination, with a coffee-mill box andgrinding mechanism mounted in the upper part thereof, of aeoiTee-receptacle sliding beneath said mechanism, and means whereby sosliding it shall at the same time raise it, substantially as set forth.

2. The combination, with a coifee-mill box and grinding mechanismmounted in the upper part thereof, of a drawer sliding into said box, acoiTee-receptacle above the bottom of said drawer, and oblique armshaving their ends pivoted, respectively, to the drawer and to the cup ata point always above the lower pivot.

The box and the grinding mechanism mounted in the upper part thereof,combined with the drawer, the swinging cup, the oblique arms pivoted atopposite ends to the cup and the drawer, and the stop or projectionfixed to the rear wall of the box in the path of said cup, substantiallyas set forth.

4:. The combination, with the spindle and its fixed bearing, of theblock sliding but not rotating upon the spindle, the rib upon the block,the feathered and flanged nut working upon the spindle, the sleeveinclosing said nut and engaging it and provided with teeth detachablyengaging said rib, and the crank screwing upon the upper endof thespindle and preventing the raising of said sleeve.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

CHARLES MORGAN.

Witnesses:

HENRY O. HYDE, ALBERT BAUMGARTIJN.

